Abstract: A method for saturating cavities present in a mass of soil or in a body in general, comprising at least one step for at least partial filling of the cavity by introducing into the cavity a filler material in the solid state or in the fluid state and capable of setting. At least one step of saturating the cavity is then performed by introducing into the cavity a fluid synthetic substance which expands and sets by chemical reaction. The synthetic substance is adapted to generate, as a consequence of its expansion, at least the saturation of the cavity and a compaction and/or loading of the filler material introduced into the cavity in the filling step, creating an optional state of permanent tension on the walls that delimit the cavity, to the point of producing, if necessary, a deformation of the walls.

Abstract: A method for repairing and/or waterproofing and/or insulating and/or reinforcing and/or restoring the structural integrity of wall systems, which it consists in providing spaced injection holes within a wall system in a manner suitable to pass through cavities that exist in the wall system, inserting injection tubes in these holes, and then inserting a substance that expands after injection as a consequence of a chemical reaction so that the substance reaches the cavities connected to the injection holes or are proximate thereto, the injection tubes being, preferably gradually retracted along the injection holes in the opposite direction with respect to insertion, to allow the substance diffusing in cavities crossed by the injection holes or proximate thereto.

Abstract: A method for saturating cavities present in a mass of soil or in a body in general, comprising at least one step for at least partial filling of the cavity by introducing into the cavity a filler material in the solid state or in the fluid state and capable of setting. At least one step of saturating the cavity is then performed by introducing into the cavity a fluid synthetic substance which expands and sets by chemical reaction. The synthetic substance is adapted to generate, as a consequence of its expansion, at least the saturation of the cavity and a compaction and/or loading of the filler material introduced into the cavity in the filling step, creating an optional state of permanent tension on the walls that delimit the cavity, to the point of producing, if necessary, a deformation of the walls.

Abstract: A method for increasing the strength of a volume of soil, particularly for containing and supporting excavation faces, which comprises at least one reinforcement step that consists in producing a plurality of mutually spaced reinforcement holes arranged substantially vertically or inclined with respect to a vertical direction in the volume of soil to be strengthened; reinforcement elements are then inserted in the reinforcement holes and are locked within the soil by injecting in the reinforcement holes a synthetic locking substance that expands by chemical reaction. The method can optionally also comprise a step for consolidation of the volume of soil by injecting, in injection holes that are arranged vertically or are inclined with respect to the vertical and are formed beforehand in the soil, a synthetic consolidation substance that expands by chemical reaction.

Abstract: A method for repairing and/or waterproofing and/or insulating and/or reinforcing and/or restoring the structural integrity of wall systems, which it consists in providing spaced injection holes within a wall system in a manner suitable to pass through cavities that exist in the wall system, inserting injection tubes in these holes, and then inserting a substance that expands after injection as a consequence of a chemical reaction so that the substance reaches the cavities connected to the injection holes or are proximate thereto, the injection tubes being, preferably gradually retracted along the injection holes in the opposite direction with respect to insertion, to allow the substance diffusing in cavities crossed by the injection holes or proximate thereto.

Abstract: A method for consolidating foundation soils or for lifting very heavy or very large structures requiring the application of a pressure of more than 500 kPa, which consists in injecting into the soil to be consolidated or into the soil below the foundations of the structure to be lifted substances which expand as a consequence of a chemical reaction and are suitable to generate, during expansion, a pressure of more than 500 kPa.

Abstract: A method for increasing the bearing capacity of foundation soils for built structures consisting of providing a plurality of holes spaced from each other deep in the soil, and injecting into the soil, through the holes, a substance which expands as a consequence of a chemical reaction, with a potential increase in volume of at least five times the volume of the substance before expansion. The expansion of the substance injected into the soil produces compaction of the contiguous soil.

Abstract: A method for increasing the bearing capacity of foundation soils for buildings consisting in providing a plurality of holes (1) spaced from each other deep in the soil, and in injecting into the soil, through the holes (1), a substance (3) which expands as a consequence of a chemical reaction, with a potential increase in volume of at least five times the volume of the substance before expansion; the expansion of the substance (3) injected into the soil producing compaction of the contiguous soil.